4912528
hot street - dirt track
Audi NM atmospheric
I-5cyl 2.0L 20v DOHC (DTH/DTH)
intake
exhaust
camshaft data:
lash ramp
: hydro
hydro
duration @ 0.1mm
: 283°
278°
duration @ 1.0mm
: 247°
244°
valve lift
: 11.50mm
10.75mm
cam lift
:
lobe angle
: 108°
108°
timing @ 1.0mm
: 16° / 51°
50° / 14°
valve lift @ TDC
: 3.00mm
2.65mm
parts setup:
cam wheels :
:
:
follower
:
:
valve lash
:
:
valve
:
:
valve locks
:
:
upper retainer
: View 99333
: View 99333
lower retainer
:
:
exterior spring
: View PAC-S10011
: View PAC-S10011
interior spring
fitted load / length
: 40kg @ 37.0mm
: 40kg @ 37.0mm
max. load / lift
: 105kg @ 13.0mm
: 105kg @ 13.0mm
REMARKS :
REMARKS :
#
The exhaust camshafts have a sleeve and internal oil supply to fit the servo pump (direct drive)
#
FOR COMPETITION APPLICATIONS ONLY. Following details must be verified:
-
the camshafs must turn smooth in the cylinderhead, provide free travel by machining where needed
-
distance between valve seal and retainer at full lift must be 0.6mm at least
-
minimum valve spring travel of 1.0mm at full lift must be provided
-
distance between valve and piston 1.0mm (pref. 1.5mm). check 5-15° before TDC on exhaust, and after TDC on intake
#
ONLY for dirt track applications and pro street use with adjustable engine management or carburettors
#
machining of cylinder head can be required at camlobes